Problem: Suppose a diode consists of a cylindrical cathode with a radius of 6.200 x 10-2 cm, mounted coaxially within a cylindrical anode with a radius of 0.5580cm. The potential difference between the anode and cathode is 295V. An electron leaves the surface of the cathode with zero initial speed (vinitial=0).
Part A: Find its speed vfinal when it strikes the anode.
Please show all work and steps to find its speed vfinal when it strikes the anode.